Asphalt is cheap, but not really that durable. 3-5 years in you generally see some cracking and should start matence. 5-7 years you generally need some patches and 15-20 you need to replace the surface. Though that's assuming good conditions and reasonable traffic patterns in some areas you need to resurface within 10 years. Concrete on the other hand generally lasts twice as long.

From a material perspective glass is much closer to concrete than asphalt. Ex: http://en.m.wikipedia.org/wiki/Glass_brick the point being glass withstands sunlight and the elements without issue, it's being driven on that's going to be an issue. And luckily that kind of stress is much easer to simulate in a lab vs weathering.

PS: That or ice which can handle heavy loads with little issue.